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4719 Burnaby (1990 WT2)
Classification: Main-belt Asteroid          SPK-ID: 2004719
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1752175634646035 3.5213e-08  
a 2.697597862348066 1.0392e-08 au
q 2.224931337700115 9.5792e-08 au
i 7.460082370720468 4.9358e-06 deg
node 1.511801096216185 2.4345e-05 deg
peri 116.1924213267758 2.7654e-05 deg
M 220.6320876430353 1.4399e-05 deg
tp 2459627.004989295535
(2022-Feb-16.50498930)
6.652e-05 TDB
period 1618.319398863563
4.43
9.351e-06
2.56e-08
d
yr
n .2224529967649179 1.2854e-09 deg/d
Q 3.170264386996017 1.2212e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2199  
   data-arc span      18916 days (51.79 yr)  
   first obs. used      1969-01-15  
   last obs. used      2020-10-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42884  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 03:49:16  

Additional Information
 Earth MOID = 1.25266 au 
 Jupiter MOID = 1.94446 au 
 T_jup = 3.335 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.5   n/a MPO448961  
diameter diameter 10.298 km 2.276 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  
rotation period rot_per 13.01 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Warner, B.D. (2013) Minor Planet Bull. 40, 137-145.]
geometric albedo albedo 0.164   0.097 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  
SMASSII spectral type spec_B C   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

4719 Burnaby (1990 WT2)          Discovered 1990-Nov-21 by Ueda and Kaneda at Kushiro
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 1990 WT2 = 1969 AC = 1972 XS = 1985 SY5 = 1987 EZ = 1989 RW4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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